John s



('NoModel.) l

` J. S. PREESE.

Mechanical Movment.

No. 239,480. Patented March 29,1881.

li NIIH'I'I'I'I'I'N UNTTED STATES `PATENT OEETcEa JOHN S. FREESE,OFBROOKLYN, NEW YORK.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 239,480, dated March29, 1881.

Application filed February 23, 1881.

To all whom t may concern:

Be it known that I, JOHN S. FREESE, a citi- Zen of the United States,residing at Brooklyn, in the county of Kings and State of New York, haveinvented new and useful Improve ments in Mechanical Movements, of whichthe following is a specification.

This invention consists in the combination, with a shaft to which arevolving motion is to be imparted, of a circular disk which is lirml ysecured to or forms part of the bearing of the shaft, and is in aneccentric position in relation thereto, a ring which tits the circulardisk and can be rotated thereon, and which is provided with an internalgearing and a pinion mounted on the shaft and engaging with the internalgearing of the ring, so that by rotating the ring a revolving motion isimparted to the shaf't, or vice versa, and that by the circular disk andthe ring the gearing is fully protected against extraneous substancesfrom th at side where the shaft extends. The ring is provided wit-h a-narm for imparting to ita revolving motion, and it is retained inposition on the circular disk by brackets secured to said disk, andextending over a circular rim or shoulder formed in the interior of therin.

My invention is illustrated in the accompanyin g drawings, in whichFigure l represents a face view. Fig. 2 is a transverse section'in theplane a: or, Fig. l.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates a shaft to which a revolvingmotion is to be imparted, and which rests in abearing, B, of anysuitable construction. In the example shown in the d rawings thisbearing consists of a hole bored through an arm or standard, O, and tothis arm is firmly secured a circular disk, D, in an eccentric positionrelatively to the shaft A, as shown in the drawings. On this circulardisk is fitted a ring, E, which rests on a ange, a, projecting from theinner edge of the disk, so that no extraneous substances can find theirway from the inside into the interior of the ring. The shaftA extendsthrough the circular disk D, and on its outer end is mounted a pinion,b, which en gages with an internal gear, c, formed on the inner surfaceofthe ring E.

The cogs of the pinion and of the internal gear may be straight 5 but Iprefer to use bevel- (No model.)

gears, as shown in the drawings, and the shaft A is provided at itsouter end with a screwthread and nut, d, so that the pinion b can beadjusted on the shaft in case the cogs wear out. A set-screw, c, retainsthe pinion in the required position.

In the interior of the ring is formed a circular ring or shoulder,f, andon the disk D are secured two or more brackets, g, which extend oversaid shoulder, so as to retain the ring on the disk D.

In the example shown in the drawings the diameter of the pitch-circle ofthe pinion. b is one-half of that of the pitch-circle of theinternalgear, c, so that for each revolution of the ring E the pinion b and itsshaft A make two revolutions. Itis obvious that the proportion betweenthese diameters can be varied to suit circumstances.

From the ring E extends an arm, h, which serves to turn said ring. Forthis purpose said arm may be connected with any suitable drivingmechanism.

My mechanical movement is intended particularly for buttonholesewing-machines, and it is so constructed that the material to be sewed,or threads or fibers which may become disengaged therefrom, areeftectually prevented from finding their way between the gears b c; butit may also be applied to other classes of machinery.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination, substantially as hereinbefore described, with theshaft to which a revolving motion is to be imparted, of the circulardisk which is firmly secured to or forms part of the bearing of theshaft, and is in an eccentric position in relation thereto, the ringwhich fits the circular disk and can be rotated thereon, and which isprovided with an internal gearing, and the pinion which is mounted onthe shaft and engages with the internal gearing ofthe rin 0.

2. rI he combination, substantially as hereinbefore described, with theshaft to which arevolving motion is to beimparted, of the circular diskwhich is firmly secured to or forms part of the bearing of the shaft,and is in an eccentric position in relation thereto, the ring which titsthe circula-r disk and can be rotated IOO thereon, and Which is providedwith an internal gearing, the pinion Which is mounted on the shaft andengages with the internal gearing of the ring, and the Ilan ge whichprojects from the disk and overlaps the inner edge of the ring.

3. The combination,substantially as hereinbefore described, with theshaft to which a revolving motion is to be imparted, of the circlilardisk which is firmly secured to or forms part of the bearing of theshaft, and is in an eccentric position in relation thereto, the ringwhich fits the circular disk and can be rotated thereon, and which isprovided with an internal gearing, the pinion which is mounted on theshaft and engages with the internal gearing of the ring, and the armwhich extends from the ring and serves to impart motion to the same.

4. The combination, substantially as hereinbefore described, with theshaft to Which arevolving motion is to be imparted, of the circular diskwhich is firmly secured to or forms part of the bearing of the shaft,and is in an eccentric position in relation thereto, the ring whichAfits the circular disk and can be rotated thereon, and which isprovided With an internal gearing, the pinion which is mounted on theshaft and engages with the interna] gearing of the ring, the circularring or shoulder formed on the inner circumference of the ring, and thebrackets which are secured to the disk and catch over said rim.

In testimony whereof I have hereunto set my hand and seal in thepresence of two sub- 35 scribing witnesses.

JOHN S. Witnesses:

J. HERMANN WAHLERs, GHAs.' WAHLnRs.

FREEsE. [L s]

